Carbureter.



F. BAVEREY.

CARBURETER.

APPHCATION FILED JULY30, 1914.

Patented June 6, 1916 2 SHEETSS'HEET I.

F. BAVEREY.

CARBURETER. APPLICATION FILED JULY 30, 1914.

Pal-tented June 6, 1916 2 SHEETS-SHEET 2 WITNESSES FRAN'QOIE: BAVEREY, OF OULLI NS, FRANCE, ASSIGNOB T0 SOCIETE DU GARBUEATEUE ZENITH, A CORPORATION OF FRANCE.

CARBURETEE.

Specification of Letters Patent.

Patented June 6, 1916..

To all whom it may concern Be it known that I, Fmugors BAVEREY, a citizen of.the Republic of France, residingat Oullins, France, Rue Pasteur 36, have invented a new and useful Improvement in Carbureters, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a vertical section showing one form of my improved carburetor; Fig. 2- is a cross section on the line lIlI of l; and Fig. 3 is a view similar to Fig. 2, showing the piston in a different position. Fig. 4; is a longitudinal view showing the device in connection with the float chamber of a car bureter.

My invention relates to sunken jet types of carburetors, which jet may be used either alone or in conjunction with another jet.

The invention also relates to a special jet for slow speed running in the preferred. form.

The object of the invention is to aid in starting the engine by increasing the quan tity of gasolene fed by the sunken jet.

In the preferred form, it also provides for increasing the gasolene fed by the special slow speedjet.

In carrying out these objects, I partly or entirely close the air entrance or air inlet for the sunken jet; and where the special slow speed jet is used, by partly or wholly closing its air inlet.

In the drawings, I have shown a preferred -form of my invention, 2 representing an at mospheric chamber or well, having in its upper portion a sidewise extending tube 3, opening thereinto. The sunken jet 4 15 at the bottom of this well 2, and is open to the atmosphere through the holes 5 5 in the tube 3. These holes may be large enough to give atmospheric pressure in the well. 1f desired, or the holes may be smaller if the sunken jet is to be fed by the suction in normal running. The lower end of the sunken jet 4 is in communication with the float chamber 11 by means of the passage 12, which passage is also in communication with "the main jet 13 by means of a passage 15,

and 16 is a passage communicating with the annular fuel outlet or compensating nozzle 17 and the lower portion of the well 2.

lVithin the tube 3 is a piston or plunger 6 having an actuating member 7, pro ecting outwardly through the slot in the wall of the tube. This member 7 may have a connection to the dash or drivers seat or any convenient place for operating the plunger. This plunger is normally held in its rearward position, with the attachment 7 against the back end of the slot, by a spiral spring 8, and when in its open normal running position, the vent holes 5 are open to the atmosphere. When the plunger is moved to its inner position by the driver, the vent.

'10. On account oi this hole 9 being smaller than the annular space around the slow speed jet, and the openings 14; the suction is increased around the nozzle of the jet 10, thus enriching the mixture furnished by the slow speed jet. The operation, therefore, is as follows :When running under normal conditions the plunger 6 is in the position shown in Fig. 3 and air is admitted to the well2 through the comparatively large opening 5 ;,when the carburet'er' is in this condition and if the throttle is sufficiently near its closed position to allow the slow speed jet 10 to operate, in the well known manner, the maximum amount of air will be allowed to sweep past the nozzle of jet 10. but if the plunger 6 is shifted to the position shown in Fig. 2, then the amount of air admitted to the well is materially reduced. The obvious result will be an enrichment of the mixture furnished. If, however, the throttle be opened so as to allow jet l to operate through the compensating nozzle, in the well known manner. described in the patent to Bavcrcy No. 907,953, then the shifting of the plunger from the position of Fig. 3 to the position of Fig. 2 will also result in an enrichment of the mixture by decreasing the amount of air admitted along with the fuel to the compensating nozzle.

Changes may be made in the number of jets. the means for varying the suction, etc,

without departing from my invention.

I claim:

1. In a carburetor. a constant level fuel chamber, a well having an air inlet in its upper portion, a fuel channel extending from the constant level chamber into the Well, a f

In a carbm-etmg :1

L at ham arranged in feet chamb the curbu retifn. valve (14 via to the 1 mssion of well t9 \2 v the SEQW SW 1'; substan by the Chan 

